CN102843105B - System for amplifying signals generated by a signal-generation unit of a satellite - Google Patents
System for amplifying signals generated by a signal-generation unit of a satellite Download PDFInfo
- Publication number
- CN102843105B CN102843105B CN201210243108.4A CN201210243108A CN102843105B CN 102843105 B CN102843105 B CN 102843105B CN 201210243108 A CN201210243108 A CN 201210243108A CN 102843105 B CN102843105 B CN 102843105B
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- China
- Prior art keywords
- signal
- frequency
- output
- digital
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3252—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output
Abstract
The system (SA) has an amplification device (DA) provided with a pre-amplifier and an amplifier. First and second channels (V1, V2) respectively comprise bandpass digital filters (F1, F2) for filtering digital signals generated by a signal generation unit (UGS). The second channel has a gain (G) arranged at an output of the filter, and a numerically controlled oscillator (NCO) arranged in an output of the gain. A digital/analog converter (CNA2) is arranged at an output of the oscillator. A recombining unit (S) enables summing up of signals from the channels. An independent claim is also included for a method for amplifying signals generated by a signal-generation unit of a satellite.
Description
Technical field
The present invention relates to be used for the system that the signal to being generated by satellite-signal signal generating unit is amplified.
Background technology
Satellite amplification system (such as communication or aeronautical satellite) is used in its optimum interval of efficiency, so as to actually result in knot
Fruit is nonlinear power response.
These are non-linear cause outside useful frequency range or " spuious " power propagation (intermodulation products), it is necessary to
High power is filtered to follow frequency regulation to this power propagation.
Therefore, the implementation of this process increased the load of satellite and makes it complicated in quality and the aspect of volume two
Change.
Be by the technology that amplifier linearisation is made using signal digital pre-distortion in signal generation it is known, such as
As an example by shown by the B1 of patent US 6549067.
The embodiment applies high bandwidth to RF levels (or radio-frequency stage), so as to bring stronger shadow in terms of the load of satellite
Ring.
Based on by it is nonlinear it is anti-phase, in terms of power (power-wise) emulated (especially by two poles
Pipe) to perform to the technology of the hardware linearizer of compensation of nonlinearity in the input of multiplying arrangement be also known, such as make
It is example by shown by french patent application FR 2722350.
For the amplifier based on transistor commonly used on satellite, these embodiments are relatively inefficient.
The content of the invention
The purpose of the present invention mitigates the problems referred to above.
According to an aspect of the present invention, it is proposed that for carrying out to the signal generated by satellite-signal generator unit
The system of amplification, the system includes：
First path, it includes being filtered for the data signal to being generated by the unit outside useful frequency band
The first bandpass digital filter with finite impulse response (FIR), and be placed at the output of first digital filter
One digital/analog converter,
Frequency offset module, it is used for the signal being converted into the signal in base band or in intermediate frequency in carrier frequency band, and
Multiplying arrangement, it includes prime amplifier and amplifier,
Additionally, being characterised by that it includes：
Second path, it includes being filtered for the data signal to being generated by the unit outside its useful frequency band
Second bandpass digital filter with finite impulse response (FIR) of ripple, the gain being placed at the output of second digital filter
Driven (phase-slaved) digital controlled oscillator of module, the phase place being placed at the output of the gain module and it is placed in described
The second digital/analog converter at the output of digital controlled oscillator, and
Recombiner equipment, it is used to be added the signal in first and second path.
The system makes it possible to the effect of the method be concentrated on the frequency band affected by non-linear phenomena, rather than with such as existing
There is the global mode that solution is proposed.Therefore, this potentially allows for making complete chain by removing high-power output filtering
Simplify.
According to one embodiment, the frequency offset module is placed in the output of the recombiner equipment and the multiplying arrangement
Input between.
In this case, single frequency dislocation and multiplying arrangement is needed to be used for useful signal and compensation letter in the same time
Number.
In one embodiment, the frequency offset module includes：Local oscillator；Frequency mixer, it is applied to by inciting somebody to action
The input signal of frequency offset module is multiplied with Frequency Patterns (frequency- with the output signal of local oscillator
Wise) it is added；And, the 3rd analog bandpass filter, it is used to isolate the result of the multiplication.
According to another embodiment, the frequency offset module includes：
First frequency dislocation submodule, it is placed in first path the output in first converter and the adder
Input between, and
Second frequency dislocation submodule, it is placed on the second path in the output of second converter (CNA2) and described
Between the input of adder.
In such a case, it is possible to will be specific to the useful band tolerance of the frequency offset equipment of useful signal (first path)
Make the useful band of the signal.
In one embodiment, described first and/or second frequency dislocation submodule include respectively：Local oscillator；It is mixed
Frequency device, its be applied to by by the input signal of frequency offset submodule be multiplied with the output signal of local oscillator come with
Frequency Patterns are added；And, the 3rd analog bandpass filter, it is used to isolate the result of the multiplication.
Therefore, it can carry out Linear Amplifer to thermal compensation signal, so as to simplify the driven of this compensation.
According to a further aspect in the invention, it is also proposed that the method for amplifying satellite-signal, the method includes following step
Suddenly：
On the first path, to launch signal carry out digital filtering, so as to eliminate deviate useful band part and
The data signal of acquisition is converted into into analog signal,
On a second path, the signal to launching carries out digital filtering, to eliminate the part for deviateing useful band；To increase
Benefit is applied to the data signal for obtaining；The synchronous signal is with consistent with the signal of the first path；And, the number that will be obtained
Word signal is converted into analog signal,
The signal in first and second path is added,
Frequency offset is performed, so as to the signal being converted into the signal in base band or in intermediate frequency in carrier frequency band, and
Signal is amplified before transmission.
Description of the drawings
Research describe by complete non-limiting example and by the several embodiments shown in accompanying drawing after, it will it is more preferable
Ground understands the present invention, wherein：
Fig. 1 schematically shows according to an aspect of the present invention, for being generated by satellite-signal generating unit
The embodiment of the system that signal is amplified；And
Fig. 2 schematically shows according to an aspect of the present invention, for being generated by satellite-signal generating unit
Another embodiment of the system that signal is amplified.
In all the drawings, the element with same tag is similar.
Specific embodiment
Fig. 1 is schematically illustrated for carry out method to the signal that the signal generating unit UGS by satellite is generated
System SA.Amplification system SA includes：First path V1, it is equipped with the first bandpass digital filter with finite impulse response (FIR)
F1, the first bandpass digital filter F1 are used for the data signal to being generated by unit UGS outside its useful band to be carried out
Filtering；And, the first digital/analog converter CNA1, it is placed at the output of the first digital filter F1.The amplification system
System SA also includes：Frequency offset module MTF, it is used for the letter being converted into the signal in base band or in intermediate frequency in carrier frequency band
Number；And, multiplying arrangement DA, it includes prime amplifier and amplifier.
Additionally, amplification system SA also includes：Second path V2 and for by the signal phase of first and second path V1, V2
Plus recombiner equipment S, wherein, the second path V2 includes：The second bandpass digital filter with finite impulse response (FIR)
F2, the second bandpass digital filter F2 are used for the data signal to being generated by unit UGS outside useful band and filter
Ripple；Gain module G, it is placed at the output of the second digital filter F2；The driven digital controlled oscillator NCO of phase place, it is placed in
At the output of gain module G；And, the second digital/analog converter CNA2, it is placed in the driven digital controlled oscillator NCO's of phase place
At output.
Frequency offset module MTF is placed between the output of recombiner equipment S and the input of multiplying arrangement DA.
In this example, frequency offset module MTF includes：Local oscillator OL；Frequency mixer MEL, it is applied to and passes through
The input signal of frequency offset module MTF is multiplied with Frequency Patterns addition with the output signal of local oscillator OL；
And, the 3rd analog bandpass filter F3, it is used to isolate the result of the multiplication.
The carrier frequency that local oscillator OL defines with it to be modulated the signal being combined.Analog bandpass filter
F3 makes it possible to that the input of multiplying arrangement DA is restricted to the useful band of signal (including compensation).
The embodiment of Fig. 1 manages useful signal and thermal compensation signal simultaneously using the optional ability of module MTF.
Fig. 2 is schematically shown for being amplified to the signal generated by the unit UGS for generating satellite-signal
System SA.Amplification system SA includes：First path V1, it is equipped with the first bandpass digital filter with finite impulse response (FIR)
F1, the first bandpass digital filter F1 are used for the data signal to being generated by unit UGS outside useful band and filter
Ripple；And, the first digital/analog converter CNA1, it is placed at the output of the first digital filter F1.The amplification system
SA also includes：Frequency offset module MTF, it is used for the letter being converted into the signal in base band or in intermediate frequency in carrier frequency band
Number；And, multiplying arrangement DA, it includes prime amplifier and amplifier.
Additionally, amplification system SA also includes：Second path V2 and for by the signal phase of first and second path V1, V2
Plus recombiner equipment S, wherein, the second path V2 includes：The second bandpass digital filter with finite impulse response (FIR)
F2, the second bandpass digital filter F2 are used for the data signal to being generated by unit UGS outside its useful band to be carried out
Filtering；Gain module G, it is placed at the output of the second digital filter F2；The driven digital controlled oscillator NCO of phase place, it is put
At the output of gain module G；And, the second digital/analog converter CNA2, it is placed in the driven digital controlled oscillator NCO of phase place
Output at.
Frequency offset module MTF includes frequency offset module MTF comprising the following：
First frequency dislocation submodule MTF 1, its be placed in first path V1 the first converter CNA1 output and add
Between the input of musical instruments used in a Buddhist or Taoist mass S, and
Second frequency dislocation submodule MTF2, it is placed in the output on the second path V2 in the second converter CNA2 and addition
Between the input of device S.
First and/or second frequency dislocation submodule MTF1, MTF2 include respectively：Local oscillator OL1, OL2；Frequency mixer
MEL1, MEL2, it is applied to by by the input signal and local oscillator OL1, OL2 of frequency offset submodule MTF1, MTF2
Output signal be multiplied come with Frequency Patterns addition；And, the 3rd analog bandpass filter F3_1, F3_2, it is used to isolate institute
The result of multiplication is stated, the frequency spectrum occupancy of the signal of the input for limiting multiplying arrangement DA is enable to.
The embodiment of Fig. 2 simplifies driven in terms of the driven and gain of thermal compensation signal.
Claims (4)
1. a kind of system (SA) for being amplified of signal for generating to the unit (UGS) by generation satellite-signal, including：
First path (V1), it includes：
For the data signal to being generated by the unit (UGS) outside its useful frequency band be filtered with limited arteries and veins
First bandpass digital filter (F1) of punching response, and
The first digital/analog converter (CNA1) being placed at the output of first digital filter (F1)；
Frequency offset module (MTF), it is used for the signal being converted into the signal in base band or in intermediate frequency in carrier frequency band；
Multiplying arrangement (DA), it includes prime amplifier and amplifier,
Additionally, the system (SA) is characterised by that it includes：
Second path (V2), it includes：
For the data signal to being generated by the unit (UGS) outside its useful frequency band be filtered with limited arteries and veins
Second bandpass digital filter (F2) of punching response,
The gain module (G) being placed at the output of second digital filter (F2),
The driven digital controlled oscillator of the phase place (NCO) being placed at the output of the gain module (G), and
The second digital/analog converter (CNA2) being placed at the output of the digital controlled oscillator (NCO)；And
Recombiner equipment (S), it is used to be added the signal of first and second path (V1, V2),
Wherein, the frequency offset module (MTF) includes：
First frequency dislocation submodule (MTF1), it is placed in the first path (V1) in first digital-to-analog conversion
Between the output of device (CNA1) and the input of the recombiner equipment (S), and
Second frequency dislocation submodule (MTF2), it is placed on second path (V2) in second digital-to-analog conversion
Between the output of device (CNA2) and the input of the recombiner equipment (S).
2. system (SA) according to claim 1, wherein, the frequency offset module (MTF) is placed in the recombiner and sets
Between the output and the input of the multiplying arrangement (DA) of standby (S).
3. system (SA) according to claim 2, wherein, the frequency offset module (MTF) includes：
Local oscillator (OL)；
Frequency mixer (MEL), it is applied to by by the input signal and the local oscillator of the frequency offset module (MTF)
(OL) output signal is multiplied and comes with Frequency Patterns addition；And
3rd analog bandpass filter (F3), it is used to isolate the output signal of the frequency mixer.
4. system (SA) according to claim 1, wherein, described first or second frequency dislocation submodule (MTF1,
MTF2) include：
Local oscillator (OL1, OL2)；
Frequency mixer (MEL1, MEL2), it is applied to by by described first or second frequency dislocation submodule (MTF1, MTF2)
Input signal is multiplied with Frequency Patterns addition with the output signal of the local oscillator (OL1, OL2)；And
3rd analog bandpass filter (F3_1, F3_2), it is used to isolate the output signal of the frequency mixer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1101782A FR2976426B1 (en) | 2011-06-10 | 2011-06-10 | SYSTEM FOR AMPLIFYING SIGNALS GENERATED BY A SIGNAL GENERATION UNIT OF A SATELLITE. |
| FR1101782 | 2011-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102843105A CN102843105A (en) | 2012-12-26 |
| CN102843105B true CN102843105B (en) | 2017-04-26 |
Family
ID=46148769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210243108.4A Expired - Fee Related CN102843105B (en) | 2011-06-10 | 2012-06-08 | System for amplifying signals generated by a signal-generation unit of a satellite |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8731101B2 (en) |
| EP (1) | EP2533419B1 (en) |
| JP (1) | JP2013005438A (en) |
| CN (1) | CN102843105B (en) |
| BR (1) | BR102012013844B1 (en) |
| ES (1) | ES2515722T3 (en) |
| FR (1) | FR2976426B1 (en) |
| RU (1) | RU2592749C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811143B (en) * | 2015-03-17 | 2018-05-29 | 华为技术有限公司 | A kind of signal frequency conversion circuit and signal frequency conversion method |
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| CN1126391A (en) * | 1994-01-28 | 1996-07-10 | 索尼公司 | Digital signal processing apparatus and method and dither signal generating apparatus |
| CN1349679A (en) * | 1999-04-01 | 2002-05-15 | 无线电系统国际有限公司 | Signal processing |
| CN1533028A (en) * | 2003-03-24 | 2004-09-29 | ��ʽ����Ntt����Ħ | High efficiency linear power amplifier |
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| FR2722350B1 (en) | 1994-07-08 | 1996-08-23 | Alcatel Espace | METHOD OF LINEARIZATION OF A NON-LINEAR AMPLIFIER, LINEARIZATION CIRCUIT AND AMPLIFIER COMPRISING SUCH A CIRCUIT |
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| US6735424B1 (en) * | 2000-06-14 | 2004-05-11 | The Regents Of The University Of California | S-band low-noise amplifier with self-adjusting bias for improved power consumption and dynamic range in a mobile environment |
| US6934341B2 (en) * | 2000-08-29 | 2005-08-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for plurality signal generation |
| JP2003069393A (en) * | 2001-08-23 | 2003-03-07 | Sony Corp | Frequency multiplication circuit and pll circuit employing the same |
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| JP4344367B2 (en) * | 2005-06-06 | 2009-10-14 | 株式会社エヌ・ティ・ティ・ドコモ | Power series predistorter for multi-frequency band |
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2011
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2012
- 2012-05-31 ES ES12170242.7T patent/ES2515722T3/en active Active
- 2012-05-31 EP EP12170242.7A patent/EP2533419B1/en not_active Not-in-force
- 2012-06-08 JP JP2012130840A patent/JP2013005438A/en active Pending
- 2012-06-08 US US13/491,789 patent/US8731101B2/en not_active Expired - Fee Related
- 2012-06-08 CN CN201210243108.4A patent/CN102843105B/en not_active Expired - Fee Related
- 2012-06-08 BR BR102012013844-1A patent/BR102012013844B1/en not_active IP Right Cessation
- 2012-06-08 RU RU2012124047/28A patent/RU2592749C2/en active
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| CN1126391A (en) * | 1994-01-28 | 1996-07-10 | 索尼公司 | Digital signal processing apparatus and method and dither signal generating apparatus |
| CN1349679A (en) * | 1999-04-01 | 2002-05-15 | 无线电系统国际有限公司 | Signal processing |
| CN1533028A (en) * | 2003-03-24 | 2004-09-29 | ��ʽ����Ntt����Ħ | High efficiency linear power amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102843105A (en) | 2012-12-26 |
| EP2533419B1 (en) | 2014-08-13 |
| FR2976426B1 (en) | 2013-05-31 |
| BR102012013844A2 (en) | 2013-07-02 |
| FR2976426A1 (en) | 2012-12-14 |
| US8731101B2 (en) | 2014-05-20 |
| US20130148700A1 (en) | 2013-06-13 |
| RU2592749C2 (en) | 2016-07-27 |
| EP2533419A1 (en) | 2012-12-12 |
| JP2013005438A (en) | 2013-01-07 |
| ES2515722T3 (en) | 2014-10-30 |
| RU2012124047A (en) | 2013-12-20 |
| BR102012013844B1 (en) | 2021-02-17 |
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